1: Endowed with a strong moral compass, and uses the revered writings of their ancestors as a guide and tool to improve their lives and the lives of those around them. See Siddhartha Gautama

2: Believes in things ludicrous by nature, undereducated, and easily usurped, religious types play into a great pyramid scheme which takes complete advantage of their natural gullibility, and has more or less created an army of zombie zealots who are used to push political agendas and moral acumen against the greater good of mankind. See Jim Bakker, George W. Bush, Clement IV

Some of history's greatest men were driven by their religious beliefs.

1. Person A: Scientists have come to the conclusion that the Earth is 4.5 billion years old.
Person B: Lies, it says on the bible that God made the Earth 5,000 years ago.
Person A: Yeah, he also sent his zombie son (who happens to be his own father) to tell you to bow down, drink his blood and eat his flesh, or else you'll burn for the rest of eternity. You religious nut.

A person who is religious has the following symptoms, being religious is a mental disorder that varies from almost unnoticeable to extremely religious:

A strange incapability of using logic to find things out.

A brainwashed attitude, absolutely refusing to hear anything against said religion.

A tendency to barely even think for themselves, preferring to use said religion instead to steer them through life, this trait in particular is so annoying that they hardly even socialize with people not belonging to said religion.

A bond with fellow religious people that is so strong, they'd vote people like George Bush to president because he belongs to their religion even though he's a dumbfuck.

A (varyingly strong) lean towards right wing politics.

And lastly an urge to spread their religion to other people.

Normal person: The big bang created the universe
Severely religious person: No GOD created humans it says so in the BIBLE!
Normal person:You believe that?! theres no proof!
Severely religious person:Yes I do you have to BELIEVE in god!